Threshing-machine



' G. H. PEKRUL.

THRESHLNG MACHINE.

APPLICATION FILED Ana-6,1918.

Patented Mar. 9, 1920.

7 SHEETS-SHEET I- My mm e. H. PEKRUL. THRESHING MACHINE. APPLICATION FILED AUG-6| 1918.

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G. H. PEKRUL.

THRESHING MACHINE.

APPLICATION \FILED we, 19w.

Patented Mar. 9, 1920.

7 SHEETS-SHEET 3.

WITNESSES Y E N R O T T A G. H. P EKRUL.

THRESHING MACHINE.

ARPLlCATION FILED AUG.6, 191s.

Patented Mar. 9,1920.

1 SHEETS-SHEET 4.

INVENTOH WITNESSES ATTORNEY G. H. PEKRUL. .THRESHING MACHINE.

APPLICATION FILED AUG-6, 1918.

Patented Mar. 9, 1920.

7 SHEETS-SHEET 5.

. R E r M I m m w W 6 kw 9w Q Q m a \Q m he v a a a 3 N v u u v Q i 5 mt Q WITNESSES ATTORNEY G. H. PEKRUL.

THRESHING MACHINE. APPLICATION FILED AUG-6, 191i Q m 2 mm m 9, m NM. w H m A Q g e 8 HI WM 7 S m k M R n x a Q Q R g Q w R R x 3: Q. Q Q k a v w\.\ a Q m/ m l WITNESSES ATTO R N EY G. H. PEKRUL.

THRESHING MACHINE.

APPLICATION FILED Aue.s,191a.

Patented Mar. 9, 1920.

7 SHEETS-SHEET I. Q

hll l JLLL WITNESSES ATTORNEY U ED STATES PATENT oFFIcn,

To 64% whom it may concern:

GUS a. runner, or sewer, OKLAHOMA.

EsHmenAen-mn A Be it known that I, Gus H. PEKRUL, a citizen of the United States, residing at Groltry, in the county of Alfalfa and State of Oklahoma, have invented certain new and useful Improvements in Threshing-Machines, of which the following is a specification. V

This invention relates to threshlng machines, having for its primary object to gen.

erally improve the construction of such n1achines so as to enhance the practicability of.

the same.

A further object provide a threshing mechanism which is equipped with a threshing cyllnder and concave of improved construction, whereby much of the grain is assured of being separated from the stalks at the initial operation.

A further object of the invention is to provide improvements in the means for mounting and operating the straw shakers, as well as improved. means'for directing the material delivered from the threshing cylinder upon the shakers, the particular construction enabling thegreatest possible amountof beneg it to be derived from the amount of energy employed. I

Further objects reside in providing a grain pan of improvedconstruction and operation; an improved sieve shoe; improved means for mounting the sieves within the shoe; improved fan construction for directing a blast of air through thesieve shoe and ohaifer; improved means for delivering the grain from the machine; improved means for'returning the chafi' to the threshing cylinder to be again operated upon; as well as improved means for removing the StlELW' from the machine. v

With these objects in -v1ew,'together w th others which willappear as the description proceeds, the invention resides in the novelformation, combination, and arrangement of parts, all as will be described more fully" hereinafter, illustrated in the drawings, and particularly pointed out in the claims.

In the drawings: Figure 1 is a side elevation of the thresh ing machine constructed in, accordance with the invention, 7

Fig. l is a similar view of the opposite side of the, machine, 7

Figs. 2 and 2 representsectional views upon a slightly enlarged scale taken through Specification of Letters Patent.

of the invention is to i thresh- Fig. 6 is a similar view of the operating arms for the shakers and grain pan, I Fig. 7 is a fragmentary side'elevation illustrating the manner in which the 'flow of air to the separating pan is controlled,

Fig. 8 is a sectional view taken through the device illustrated in Fig. 7, and illus-- trating the manner in which the controlling gate is suspended,

Fig. 9 is a fragmentary view illustrating the manner in which one of the shaker frame bars is connected to the controlling beam,

Fig. 10 is a similar view showing the means employed for effecting a connection between one of the rocker arms and the rear shaker controlling link,

Fig. 11 is a detail view showing one of the supporting brackets for the shakers,

Fig. 12 is a perspective view of one of the bearing blocks,

Fig. 13 is a similar view of one of the bearing pintles to be applied to the shaker supporting beams,

Fig. 14 is a detail perspective view of one of the grates or screens used in the improved concave, a

Fig. 15 is a detail sectional viewillustrating the manner-in which the thresher teeth are connected to the drum or cylinder, and

the improved mechanism is indicated at 19,

and may be of any suitable size, shape and construction. Each side of the body 19 is provided atappropriate places with doors 20 to'permit of access to the interior of the housing being had. for the-purpose of adjustment or'repair or inspectionof any of the movable parts. Y i

, Patented Mar. 9-, 1920. Application filed August 6, 1918. Serial No. 248,602. I v 7 I cylinder.

The threshingcylinder and concave therefor'are arranged at the forward end of the vehicle and transversely thereof, a shaft 21 being provided for the support of the said This A cylinder icomprisesnamphirality of spaced heads 22 keyed or in any other preferred manner secured upon the shaft heads are connected by the longitudinally disposed bars indicated generally at 23. These-bars are held in proper position upon the'cylinder heads by the bands 24. Any number of the heads 22 may be employed; four being used in the present instance. The bars 23 are arranged in spaced relation around the periphery of the cylinder, and each is provided with a series of teeth 25. Each of the members 23 comprises a pair of bars of equal length and width, arranged face to face and being connected to the cylinder heads. The outer bar is provided with a series of spaced openings rectangular in shape, and tapering slightly inwardly, while the inner bar is equipped with circular openings to register with the openings in the outer bar. These alined openings receive the shanks 26 of the teeth 25, each shank being provided with a squared portion-27 tapering inwardly, and the squared portions fit snugly within the correspondingly shaped openings in the outer bar. 28 are threaded upon the inner extremities of the shanks, and it is obvious, therefore, that this particular construction and arrangement of the teeth and shanks enables the teeth to be firmly held in proper position upon the cylinder bars and assist in h'rmly holding the bars properly positioned upon the cylinder. Any number of such teeth may be used.

'The concave includes a pair of arcuate end members indicated at 29, each of which is provided in its inner surface with an arcuate channel or groove 30. The grooves or channels and end members are substantially concentric with the threshing cylinder.

The end members 29 are connected by relatively narrow bars 31, each of which is provided with a plurality of upstanding teeth 32, adapted to cooperate with the teeth in the threshing cylinder to separate the grain from the material fed to the machine. T he bars 31 rest at their ends in the channels 30 in the end members, and the various con- 21 in spaced relation, and the said Retaining nuts abling a much morefree passage of the grain than the ordinary foraminous concave heretofore used for this purpose. r

The forward ends of the end members 29 'are'recessed as shown particularly in Fig.

2 and these recesses receive the rounded ends of rock arms 3%. The rock arms are firmly attached to the adjusting shaft 35 0X1- tending transversely of the vehicle, and it is obvious that rotary movement applied to 1 this shaft will cause the forward end of the concave to be raised or lowered, according to the direction 0t rotation of the shaft.

This operation of the mechanism will cause able outwardly projecting flanges 38 on the uprights 39 provided for the support of the threshing cylinder, and adjusting nut-s upon the upper extremities of these hanger rods enable the latter to be adjusted at will. It is obvious, therefore,'that the rear end as well as the front end of the concave may be minutely adjusted.

The forward. end of the housing 19 is provided with an opening 40, through which the material operated upon by the threshing cylinder is directed. A rod or bar 41 isdisposed transversely of the housing within the opening 40, and supports the free end of a 'ereen 42 aliixed at its forward end to the cross rod 36.

The straw shaker mechanism, which will now be described, isconfined wholly by the housing 19 upon the vehicle, and is designed to receive material after it operated upon by the threshing cylinder. y

Arranged at the sides of the frame 16 within the casing 19 near the forwardend thereof are rocker arms 43. A detail view of onset these rocker arms is shown in Fig. 6 of the drawings, and 1t will be observed that the rocker arm is provided at its upper end with an inwardly projecting boss or plntle 44-, being also provlded' with pintles or bosses a5 and 46 near its lower end. The

lowest of the bosses, or the one indicated at 4-6, is hollow and receives the end of a rod 4-7.' Ihis rod extends at its opposite end in r a suitable opening in'the boss upon the opposing-side of the machine. and the rod is designed to support a tubular member, the purpose of which will appear hereafter. The rock'arm is supported by a shaft or rod 48, the latter being mounted in bearings 49 at the sides of the machine;

A second pair of rock arms 50 is arranged within the housing inthe rearof the rock arms 43 and; slightly above the horizontal each side of the housing, and are supported by the rod or bar 51. The upper and lower extremities of the rock arms 50are provided with inwardly projecting studs or pintles 52 and 53 respectively. The pintles or studs 44.52 upon the arms 43 and 50 at each side of the housing support the forward and rear ends respectively of beams 54:, the latter being provided for the support of the straw shakers. These beams are each provided at their ends with strap members 55, having confined therein the sectional bearing, boxes 56 which inclose the pintles 4l52, and the bearing blocks are adjusted within the strap members by the movements of the wedge block 57, the latter being controlled in its movements by the adjustment of nuts 58 upon. bolt 59.

Brackets 60 are supported by the beams 54: at the forward ends thereof, and'these brackets carry a receiving straw shaker indicated generally at 61. This shaker is of equal width with the housing but-it is of relatively short length, being substantially horizontally disposed. The shaker may be of conventional form, having space :1 laterally disposed slats as well as the longitudinally disposed fish-backs as shown. The forward end of this shaker is disposed in substantially the same horizontal plane with the rear end of the screen at, and is designed to receive material discharged from the threshing cylinder. 7

Each of the beams 54 is provided. upon its outer side near the forward end thereof with a plate 62, from the center of which extends a bearing or wrist pin63, (see Fig. 13). The wrist pins 63 pivo'tally support the forward ends of the longitudinal bars 64 of the straw shaker 65. shaker communicates at its forward end with the rear end of the shaker 61, and is designed to receive material from theilatter. The shaker 65 may be constructed similar, to the shaker 61, and inclines upwardly as it extends rearwardly. The rear end of this shaker is supported by hanger indicated generally at 66, one being provided at each side of the machine-and upon the exterior of the housing 19. These hangers comprise spaced bearings 67 and 68,

the upper of which is pivoted upon a study or boss 69 upon the exterior of the machine housing, while the bearing 68 is mounted upon a stem or stud 70 projecting outwardly from the side bar 64 near the rear end thereof. The bearings 6768 are connected by spaced rods 71, the extremities of which are threaded and extend through the sec tions of the blocks 67-68. Adjusting nuts 72 are threaded upon the extremities of these rods and permit of ready adjustment This straw-5 of the bearing members longitudinally of the rods. This particular arrangement enables the angularity of the straw shaker to be varied at will. It will be observed, particularly with reference to Fig. I of the drawings, that the pintles 70 at the rear end offiie'shaker extendthrough arcu ate slots 73 in the side walls of the housing,

the said slots being substantially concentric shaker 65 and is rocka'bly supported at its rear end by hangers 75 similar to those used for the support of the rear end of shaker'65.

Arranged in an inclined plane in the rear of shaker 75 is a shaker 76, the latter being similar in construction to shakers 65-7 5. The shaker 76 is rockably supported at its forward and rear ends by the hangers 76, and thevforward end of this shaker is disposed beneath the rear extremity of shaker 75, so as to receive material delivered from the rear end of the last mentioned shaker The shaker 76 receives its oscillatory motion through the medium of a link or bar 77 connected at one end to the shaker 76 and at its opposite end to the lower extremity of the rock i arm 50. A detail view of one end of this link is shownin Figs. 10 and 12, and it will 7 be observed that the-linkis provided at each end with a strap member 7 S, which slidably supports a bearing block section 79. This section has an'elongated slot 80 therein through which protrudes the retaining bolt or keeper 81, and a set screw 82 threaded through the bight portion of the strap member 78 is providedfor the purpose of moving the block section 79 toward or away from the wrist pin or stud with which the link is connected. An oil cup 83 may be provided to lubricate the link at its connection with the wrist pins or hearing members. ends of rock arm 50 as the means for delivering reciprcatory movement .to shaker 7 6, it is obvious that the shakers75 and 7 6 will move simultaneously but I in opposite directions. I

The grain pan for the threshing apparatus is indicated at 84 and is mountedfor re-f 'ciprocation at the bottom of the housing and stands beneath the threshing cylinder and all of the flights of straw shakers." The 1 30 I v 7 By utilizing the lower pan may be constructed of light metal, of a width substantially equal to the width of the machine, and this'pan has its sides or longitudinal edges turned up to provide flanges 85. The rear end of the pan is re ciprocably supported by the hangers 85, while the'pairis-comrected'irear'its' forward end to the stud or pin 15 carried by the reel-I arm. 13. The pan near its end foraminated so as to provide a chaifer sieve, the sieve in the present instance comprising a mesh fabric indicated at 86.

The grain pan 8 1 supports the forward end a return pan 87., theside bars 88 of which are secured to the upstanding flanges 85 of the pan. The return pan is held at its rear end in proper inclinedpo sition beneath the shaker 76 by hangers 89, and it is obvious from this construction that reciprocatory movement of the grain pan will cause the return pan to similarly move.

we return pan is designed to receive gram passing through the slats of therear shaker 76 and to divert such grain downward 3* into the grain pan 84.

A. sieve shoe 90 is disposed beneath the chatter sieve 86, and is designed to receive the grain passing through the chatter sieve. The bottom of the sieve shoe inclines upwardly from its forward to its rear end, and is mounted for sliding movement upon the cross plates 91, and the sides 92 of the shoe have adjustably arranged thereon the brackets 93 to support the sieves 9a.. The rear end of the shoe is also equipped with adjustable brackets 95 to support the rear ends of the sieves 94, it being preferred that the sieves be maintained in horizontal position directly beneath the chaffer sieve 86. By this particular arrangement, the sieves 9-1 maybe moved up close beneath the chaffer sieve and may be adjusted toward or away from each other as conditions may require. The shoe receives slight longitudinal reciprocating movement through the pitman 00 connected at its forward end to the shoe and which is equipped at its rear end with a cam 97 aflixed to the laterally disposed shaft 98. Any number of these pitm'en may be used, two being employed in the present instance. A guide board 99 is 'aranged at the forward end of the shoe directly above the upper screen or sieve 94; therein. to prevent grain passing ofi of the said sieve at the forward. ends thereof. The upstanding side members 92 of the shoe are secured to the lower ends of hangers 100 attached to the exterior of the casing or housing, and these hangers permit of the shoe reciprocating within the rehi cle.

orchannel 101, within which is arranged awormconveyer 102, This conveyer may communicate at its delivery end with a suitable receptacle -or conveyer to receive th grain. I

A fan Or blower device is used in connection with the sieve shoe and chaifer to prevent chaff entering the conveyer 102, and this blower is disposed in advance of the sieve shoe 90. The casing for the fan or blower is indicated at 103, and extends transversely of the vehicle below the bottom thereof and slightly in advance of the forward end of the sieve shoe and the channel 101. The rear of this casing is in communication with the interior of the sieve shoe 90 at the forward end thereof, so that a blast of air created by the rotary movement Off'fdfl 10 1 in the fan casing will be directed across the upper end of channel 101 and into the sieve shoe beneath the screensor sieves 9 1. The volume and direction of the air emitted from the casing the casing through these openings is controlled by gates 107. These gates are slidably mounted upon trackways 108 secured to the frame of the vehicle, brackets 109 being secured to the gates to engage with the trackways. The lower ends of the gates are held from. swinging outwardly by the guide brach ts 110. a

The interior of the housing is provided with a gutter or. channel .110 disposed transversely of the vehicle and in the rear of the chafler sieve and sieve shoe. This gutter is to receive the tailings and trash which result from the threshing or separating operations, and an anger or worm conveyer 111 arranged within the gutter causes the tailings to move out of the housing at one side of the vehicle. The gutter coinuninicates at its delivery end with the interior of a chute or conveyer housing 112. within which arranged the conveyer 113. The forward end of the chute or casing 112 is equipped with a conventional form of belt tightener 11 1 so that the endless conveyer within the housing may at all times be kept at the requisite tension. It is my purpose to direct the tailings carried by the conveyer 113 into the concave or upon the threshing cylinder so that the tailings may be passed through the machine to be again operated upon, and any desired means may be employed for conveying the .tailings from the end of the housing to the concave or cylinder. By thus operating upon the sailings, any grain whlch may have escaped in the initial operation will be re-' covered. The conveyer 113 may be driven by a suitable sprocket affixed to the end of shaft 98.

A stacker mechanism is used in-connec-' tion with the threshing machine to remove the straw therefrom and to stack it conveniently beside the machine. A fan orbeater .per end the inner extremity of the stacker tube or arm 119. The arm 119 may be revolubly mounted upon the funnel 118, and may, if desired be capable of being ex tended. Suitable mechanism may be employed for controlling the movement of the stacker tube and for operating the exten sible parts thereof. 7

Power is applied to the threshing machine through the medium of.a belt 120 passing over a belt pulley 121 affixed to one end of shaft 21. A second pulley 122 is aflixed tothe shaft 21, and the belt 123, passing thereover travels around a pulley 124 afiixed toone end of the blower shaft 117. The machine near its forward end is equipped with a crank shaft 125, having secured thereto one end of a'pitman 126, the forward end of which is connected with the tubular member 126 surrounding the rod 47 connecting the hollow bosses 46 at the lower extremities of the rock arm 43. It is obvious, therefore, that when the shaft 125 rotates, reciprocating movement will be delivered to the rock arm43, whereupon all of the shakers and the grain pan will be moved. v t

The shaft 127 which supports the blower or fan 104 is provided with a pulley 128,

over which is trained a belt 129; thesaid' belt also passing over a pulley 130 aflixed to shaft 21. The shaft 127 is provided at its opposite end with a pulley131, over which passes a belt 132. This belt 132 travels over a pulley 133 aflixed to one end of the shaft supporting and operating the tailing auger 111. The belt 133 also passes over a pulley 134 aflixed to one end of 'thecam shaft 98, and then passes to the pulley 131. The grain conveyer or worm derives its rotary movement from a belt 137 passing over a suitable pulley upon the fan shaft 127. I

The shaft 21 is equipped with a belt pulley 138, over which is trained a belt139 passing also over a belt pulley 140 affixed to one end of ashaft 141 disposed transversely of the housing 19 near the'forward end thereof.

' secured to one end of shaft 125's0 that'rotary movement may be transmitted tothe last mentioned shaft; The shaft 141 is' equipped ,withbeater blades 142, and: it will beobserved particularl with reference to Fig.

2 of the drawings, that t imitate? mecha-- nism is disposed near theforward end of the shaker 61. By arranging the beater in this particular position, the straw thrown rearwardly from the threshing cylinderor drum is forced downwardly against the straw shakers. To prevent any of the straw evading the first shaker acheck or deflector plate 143-is provided. This plate is hinged at its upper end as at 144 to the upper part of housing 19 in the-rearof the beater 142, and a strap 145 maintains the plate the proper angular position. .It is obvious that the angularity of this plate may be varied as conditions require. A curtain 146 is arranged in the housing 19 beyond the check or deflector plate 143, and preferably at the rear end of straw shaker 65. This curtain prevents chaff andstraw passing'beyond the forward end of shaker 75.

In operation, the belt 120 is passed over a power shaft'from a suitable source of motive power (not shown) and the various movable parts of the threshingmechanism at once become active. Thematerial to be threshed is fed. to thecylinder ordrum at the forward end of the'maohine by beingdeposited in the concave. Self feeding mechanism may be employed for this purpose, andit will be observed that the'forward end of the concave is provided with a feed board indicated at 147, and over-which thematerial passes. The teeth of the concave and of the cylinder operate upon the material deposited therein andthe kernels of' grain are to apgreater or less extent removed from the stalks at this initial operation. The

grain kernels'pass through" the screens or grates 33 and drop upon the grain pan 84. A deflector plate'148 is provided at the forward end of "the machine to direct the grain tact with the shaker 61 by the beater 142.

The check or-deflector plate 143 alsoassists in properly positioning the straw upon the shakers. As the'fiights of shakers are reciprocated,the straw will be constantly kept in a state of agitation, and any grain kernels which may have remained therewith will be shaken loose and will drop into thegrain pan 84. The straw passes beyond the rear 7 end of shaker 65 and onto the forward end of shaker 75, traveling slowly up the last mentioned shaker and. is then deposited upon the shaker 7 6": .After it leaves the. shaker? 6 all grain. will have been removed therefrom, and the straw is then drawn into the chafier fan and forced out of themachine through the tube..1l.8119.

The reciprocatmg movement of the pan 84 causes the grain thereon to gradually move rearwardly onto the chafler or foraminous bottom 86. The grain then drops upon the upper screen of the pair 94: carried by the sieve shoe, the reciprocating movements of the latter causing the grain to work through onto the lower screen or sieve 9 4. The grain isxfurther kept in a state of agitation by the air blast entering the forward end of the sieve shoe, and this blast relieves the grain of any shells or trash which may have adhered thereto. After the grain sifts through the sieve 94, it drops upon the inclined bot tom LO'oltne shoe, and then passes forwardly into the channel 101, from whence it is delivered from the machine. The chail and smaller particles or trashfind their way into the channel 110? in which the tailing auger is positioned, and are conveyed laterally and into the conveyer housing 112 in one side ofthe machine. This trash is then moved forwardly and may be deposited upon the threshing cylinder to be again operated upon.

Byreasonofv thefact that the housing is equipped on both. sides with. doors 20,. it is: obvious that adj ustment' or repair. of any of the; parts which cannot .be made from the exterior of the: machine may be readily made .by'having an operator pass to the interior of: the housing.- Adjustmentsof the shoe sieves may be made by'moving the supporting brackets thereof and these adjustments may becarriedout while the machine is in motion. Adjustments of the various hang ers:.may be madeironi theiexterior of the machine, and by reason of the simplicityof the constructionfiof these hangers it is ob viouss that such adjustment as is required may; becma'deueasily' and quickly. The concavc,a also, maybe adjusted. from the ex tenor of: the machine and while the latter isl in" operation;

The machine in its-entirety has been con structed andarranged with a View to overcoming difiiculties'and objections common to machines now used for similar purposes, dii'ficulty having been experienced particularly with the cylinder, concave, straw shakers and separating apparatus which includes the screens and blower. The arrange ment is such that vibrations ofthe machine have been reduced to a minimum and lost motion or power due to unnecessary friction has been eliminated as far as possible.

The foregoing description and the drawings have reference to what may be considered the preferred, or approved, form of my invention. It is to be understood that I may make such changes in construction and arrangement and combination of parts, materials, dimensions, et cetera, as may prove expedient and fall within the scope of the ap pended claim.

Having thus fully described. my invention, what I claim as newand'desire to secure by Letters Patent is In a threshing machine, pairs of rock arms arranged in spaced. relation, beams connecting the upper ends of one pair of arms with the corresponding ends of the other pair, a bracket on the front ends of the beams, a straw shaker carried by said bracket, a secon'dshaker pivoted near the 'front ends. of said beams, a third shaker pivoted near the rear ends ofsaid beams, hangers supporting the rear ends of the pivoted shakers, a grain pan reciprocably mounted beneath all of said shakers and connected to one pair o'f'said rock arms below'the pivot thereof, a return pan beneath one of said shakers and governed in its movement by sa1d"gra1n-pan, and pitmen connectedto the {lower ends of-one pair of said rock arms.

In testimony whereof I afiix my signature in presence of two wltnesses.

I 'GUS'I-I. PEKRUL.

Witnesses:

E. I2. Huron, J. G. FELI LE, 

